Carbureter.



J. H. GOULD.

' GARBURETBR.

APPLICATION FILED MAY Z6, 1.909.`

Patented Jan 7,1913

2 SHEETS-SHEET 1.

J. H. GOULD.

GARBURBTBR. APPLIAT-ION FILED MAY 26, 1909. 1,050,959, Patented Jan?,1913.

I 2 SHEETS-SH-EBT 2.

Pny. 4. Fay. J.

Witness es. Innen/n' 5.6i y om segg.

UNITEDv` STAIFS PATENT GFFICE.`

JOH H. GOULI), OF PLYMOUTH, ILLINOIS, ASSIGNOR T0 ALFREDO. STEWART, OFLOS ANGELES, CALIFORNIA.'

CARBURETER.

Specification of Letters Patent.

Patented Jan. '7, 1913.

To all whom 'it may concern.'

Be it known that I, JOHN H. GOULD, a citizen of the United States,'residing at Plymouth, in the county of Hancock and State of Illinois,have invented a new and useful Improvement in Carbureters, of which thefollowing'is a specification.

This invention 'relates more particularly to that type of carburetersfor internal combustion 'engines in which'the supply of the explosivemixture to the engine is automatically regulated in accordance with theneeds ofthe engine by a device which is operated by the suction of theengine. v

The. object s .,of the invention are to produce an efficient carbureterof very simple and practical construction, in which the feed of both theair and theofuel or hydrocarbon are automatically regulated inaccordance with the speed of the engine, whereby a mixture of the properproportion of air and the volatilized fuel is supplied to the engine atall speeds thereof ;4 also to so construct the carbureter that t-he airand fuel- 'regulatingvalves ordevices are combinedin a single movableunit or part without intermediate joints or connections, thereby greatlysimplifying the construction of the carbureter and reducing the numberof its working parts; also to provide an air-regulating valve which isoperated automatically bythe suction of the engine and has a fuel supplypassage through which the fuel is drawn by the suction of the air pastthe valve; and Aalso to improve carbureters of this type in the respectshereinafter described and set forth in the claims.

In the accompanying drawings, consisting of two sheets :cV Figure 1 is asectional elevation of a carbureter embodying the invention. Fig. 2 is aplan view thereof. Fig.-3 isa sectional plan thereof in line 3 3,Fig. 1. Fig.4 is a side elevation thereof. Fig. 5 is a fragmentarysectional elevation of a carbureter of slightly modified construction.Like reference characters refer to like parts in the several figures.

Gasolene is the fuel ordinarily used in the carburetor and the termgasolene alone will be employed in this, specification for the sake ofbrevity, without, however,l

intending thereby to restrict' the use of the carburetor tothisparticular'fuel.

A representsa'gasolene chamber, B an Vairl and gasolene vmixing chamber,and C air ;v

inlet openings in the carbureter casing between gasol'ene and mixingchambers. The casing conveniently consists of a lower sec-v tion a whichforms the gasolene chamber A,

an intermediate section a .which has a de- 60 tachable screw connectionwith the `top of thelower section, and an upper section a2V -which iscorinected by a screw coupling as to the intermediate section.Theintermediate section c has a' reduced waist portion 65 which forms aseat a4 for the air admission anducharge regulating valve, the air inletopenings- C being provided in this section below the valve seat at. Theportion of this section above the valve seat a4 flares or-in- 70 creasesin diameter upwardly and together with the upper section a2 of thecasingl forms v the mixing ,chamber B.. 'The described con-l structionof the casing is desirable, but the casing could'be'of any othersuitable con- 75 struction. The pipe leading to the engine is attachedvto the upper end of the casing and communicates with the mixing chamberthrough a discharge'or outlet' passage D,

which is controlled by a throttle valve@ of any usual or suitableconstruction. Q

E represents the combined air admission and charge regulating valvewhich is ar# ranged to move vertically "in the mixing chamber and,wheninactivefto rest on the seat a4 formed by the reduced waist of theintermediate section of the casing. This seat and the coperatingfaceofthe valve are preferably tapered or frusto-conical in shape. pendsinto the gasolenechamber A',through a guide bearing e" in the latter,andl is hollow or is providedwith a passage (iz-Which connects with oneor more disehargeducts c leading through the body ofthe valve to i theperiphery thereof, preferably tothe face thereof which rests on theva veseat. When the valve is seated it cuts o the admission of air throughthe inlet openings C to the,

' mixing chamber andalso closes the gasolene 100 ducts es so as to cutoff the mixing-chamber from 'the' gasolene chamber. The valve E 1slifted 0E of' its seat bythe suction of the 'engine .when the latter isworking,l and air is thus admitted into the mixing chamber. .105

The gasolene is -sucked up from the gasolene chamber throughthe passagee2 and discharge ducts e3 by the flow of the air around the valve pastthe ducts e", and is commingled with the air in the mixingchamber Thevalve has a stem ev which de- 90 I to produce the explosive mixture.YThe valve times, a relatively stationary needle valve `F is arranged inthe passage@2 of the gasolene nozzle and this passage is made taperfing. This gasolene valve F obstructs the nozzle less or more andconsequently admits Vmore or less gasolene to the mixing chamberaccordingly as the automaticvalve is moved -arther from or nearer to itsseat to increase or decrease the supply oit air. The gasolene valve Fhas a screw-threaded shank f which' passes through a nut f in the bottomof the gasolene chamber A and is provided at its outer end with a handlefor turning it to initially adjust the valve as may be necessary toproperly regulate the feed of the gasolene. If desired, the gasolenevalve F can be connected to its shank f by a universal joint f2, asshown in Fig. 5, to 'make the valve self-centering in the nozzle.

By the described construction and arrangement of the automatic valve,the air l is drawn pastthe valve, immediately around the gasolenedischarge orifices thereof, regardless of the position of the valve,which insures an adequate supply of the gasolene to the air under thevarying suctions produced by the engine.

The automatic valve is preferably made of such weight that it willmaintain a suitable velocity of airpast it and past the fuel ducts toinsure a uniform mixture and steady action of the engine and to seatitself without the use of a spring. In operation, for any given demandof the engine, the valve will automatically lift sutilciently to givethe engine the requisite charge, z'. e., until the pressure above itplus.

its own weight, will approximately equal the atmospheric pressure belowit.

In the construction shown in Figs. l and 3, the valve stem e is providedwithy external helical threads G and the guide'bearing e lin which itworks is correspondingly threaded, which causes the valve to rotate inits up and down movements, thus mall:- ing its movements steady andgradual and preventing a jerky action thereof. If preferred, however,the valve stem and its guide can be made smooth., as shown in Fig. 5,and any suitable means for dampening or checking the movements of thevalve can be ernployed.

I-I represents a valve operated by a oat I and controlling the supply ofgasolene to the carburetor for keeping it at a constant level in thegasolene chamber A. In

intente the construction shown, the float is annular and located in thegasolene chamber A sur- Y rounding'the gasolene nozzle, but thisc0nstruct-ion is not essential and the float could be arranged in 'aseparate float chamber communicating with the chamber containing thenozzle, as in son/1e makes of carbureters. l

I claim as my invention:

l. In a carburetor for internal combustion engines, the combination of acasing having an air inlet, an automat-ic valve whose position isdependent upon the demands of the engine and which controls theadmission .of all air to the carbureter, said valve having a ixed stemprovided with a gasolene supply passage, and a valve j which coperateswith said passage for regu# lating the supply of gasolene in proportiontothe supply of airfor mixture with the air, substantially as set forth.A

2. In a carbureter for internal ,combus- Ation engines, the combinationof a casingl having an air inlet and a valve seat, a valve which isoperated automatically by the suction'of the engine and coperates withsaid seat to control the admission of air to the carbureter, said valvehaving a Xed hollow stem provided with a passage for the gasolene andone or more ducts leading from Said passage to the periphery of thevalve adjacent to the -valve seat, and a valve which cooperates withsaid hollow stem ot the automatic valve to regulate the supply ofgasolene in proportion to the supply of air for mixture with the air,Ysubstantially as set'forth.

3. In a `carbureter vfor internal combustion engines, the combina-tionof .a casing having an air inlet' and a valve seat, a weighted valvewhich is operated automatically by the suction of the engine ndcooperates withl said seat to control the -adi stem oit' the automaticvalve to regulate the supply ot gasolene for mixture with the air,substantially as set fort-h.

4. In a carbureter for internal combustion engines, the combination of acasing having a valve seat, an air inlet opening in the wall of thecasing at one side ot said seat, and a carbureting chamber at theopposite side of said valve seat having-walls which diverge away fromsaid v alve seat, anautoniatic valve Whose position is dependent uponthe demands ot the engine and which cooperates with said seat to controlthe admission of air to the carburetor, gasolene supply ducts beingprovided which have d1ssaid tapering charge openings in immediateproximity to the peripheral portion of said valve seat which coperateswith said valve, a valve which controls the supply of gasolene to saidducts and comprises a part having a passage and a needle located in saidpassage, one of which parts is tapered, one part of said gasolene supplyvalve being fixed to and moving with said air valve for maintaining thesupply of gasolene through said ducts proportional to the :supply of airthroughout the movement of said valve for mixture with the air,substantially as set forth.

5. In a carbureter for internal combustion engines, the combination of amixing chamber, a gasolene chamber, a valve which is operatedautomatically by the engine suction and controls the admission of air tothe mixing chamber, said valve having a stem with a tapering gasolenepassage entering the gasolene chamber anda connecting discharge duct,and an adjustable stationary valve cooperating with the walls ofpassage, whereby the opening between sai passage and said valveincreases -with the suction on said automaticl said seat to control thepassage vof airto said carbureting chamber, said valve having a ixedstemwith a gasolene. passage depending into the gasolene chamber and aconnecting discharge duct lea-ding to the periphery of said valveadjacent to said `valve seat, and-a relatively stationary valve in saidpassage in the valve stem and coperating with the walls thereof forregulating the feed of the 'gasolene, `substantially as set forth.

Wit-ness my hand, this 22d day of May,

JOHN H. GOULD. Witnesses:

C. W. PARKER, E. C. HARD.

